Windows definitely caches DNS entries...but as far as I've seen, it does honor TTLs... Erik Amundson A+, N+, CCNA, CCNP IT and Network Manager Open Access Technology Int'l, Inc. Phone (763) 201-2005 Fax (763) 553-2813 mailto:erik.amundson@oati.net CONFIDENTIAL INFORMATION: This email and any attachment(s) contain confidential and/or proprietary information of Open Access Technology International, Inc. Do not copy or distribute without the prior written consent of OATI. If you are not a named recipient to the message, please notify the sender immediately and do not retain the message in any form, printed or electronic. -----Original Message----- From: Chris Adams [mailto:cmadams@hiwaay.net] Sent: Monday, April 18, 2005 12:35 PM To: nanog@merit.edu Subject: Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Once upon a time, Patrick W. Gilmore <patrick@ianai.net> said:

Depends on what you call "caching". Does honoring a TTL qualify as caching?

What other kind of DNS caching is there?

Can you imagine what would happen if every time anyone ever looked up

any hostname they sent out a DNS query?

That's what most Unix/Linux/*BSD boxes do unless they are running a local caching name service of some time (BIND, nscd, etc.). I wasn't actually aware that Windows had a DNS cache service. -- Chris Adams <cmadams@hiwaay.net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.